gmm20w_brochure
P.O. Box 26, FIN-00421 Helsinki, FINLAND
Tel: +358 9 894 91
Fax: +358 9 8949 2485
Email: [email protected]
www.vaisala.com
GMM20W Carbon Dioxide Module
for OEM Applications
Features/Benefits
•
•
•
•
Incorporates the silicon based
Vaisala CARBOCAP® Sensor
Stable in terms of time and
temperature
Dust, water vapor or most
chemicals do not affect the
measurement accuracy of the
sensor
Small size enables easy integration
into various systems
The Vaisala CARBOCAP® Carbon Dioxide Module GMM20W is designed for OEM
applications in benign environments.
Performance
Dimensions
Carbon dioxide measurement
Measurement range
0...2000 ppm
(nominal; can be calibrated for other ranges: 0...5000 ppm, 0...10,000 ppm, 0...20,000 ppm)
Accuracy (including repeatability, non-linearity and calibration uncertainty)
± (2 % of range + 2% of reading)
Long-term stability
<±5 % of range / 5 years
Response time (63%)
1 minute
Warm-up time
1 minute, 15 minutes full specifications
Weight
45g
Dimensions in mm
Inputs and outputs
Outputs
Resolution of analog outputs
Recommended external load:
current output
voltage output
Operating voltage
Power consumption
0...20 or 4...20 mA and 0..10 V
8 bits
max. 500 ohm
min. 1 kohm
nominal 24 VAC/DC (18...30 VDC)
<2.5 W
Operating environment
Temperature
Humidity
Electromagnetic compatibility
-5…+45 °C
0...85 %RH, non-condensing
EN61326-1, Generic Environment
Accessories and options
Display and relay option
Relay output option
Calibration software kit (disk and serial COM adapter)
Analog temperature module* (not available when display option is added)
Vaisala Instruments Catalog 2007
Ref. B210641en rev. A
GMI21
GMR20
19222GM
GMA20T
CARBOCAP® is a registered trademark of Vaisala.
Specifications subject to change without prior notice.
©Vaisala Oyj
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